Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef53fbd1c3107f29…

MALICIOUS

PDF

80.5 KB Created: 2021-03-20 06:18:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 363097695bdd4e066418cf2a5993b9f2 SHA-1: 7f4531479ec907f21ef414cc7cd582414255e249 SHA-256: ef53fbd1c3107f2900cfd91062b7b143059f66b01738858ff38a668b300b797c
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI pointing to a malicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further support the malicious nature of the file. Although no scripts were explicitly extracted, the presence of external URIs suggests the document is designed to redirect the user to a site that likely hosts a malicious payload or phishing content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://mezovuduw.ru/wix?keyword=angle+of+elevation+%2526+depression+trig+worksheet+answer+key
    • http://lezigovedavide.getenjoyment.net/zalazuvakoliremenuwezuv.pdf
    • http://bilkaita.space/how_do_i_prepare_for_my_drivers_testsnpdf.pdf
    • http://gtomishebs.xyz/hakuouki_hekketsuroku_episodesd7u0g.pdf
    • http://texno3ua.com/82435619985zxm7o.pdf
    • http://fajesamosini.sportsontheweb.net/70380300044.pdf
    • http://leaninrzpd.site/47233494786lwajq.pdf
    • http://goldenframecollision.com/weightlifting_fairy_full_episodexjsyt.pdf
    • http://fiwusenipabaj.iblogger.org/broadway_font_family.pdf
    • http://miribut.mywebcommunity.org/no_fear_shakespeare_macbeth_act_2_scene_2.pdf
    • http://domainlimax.xyz/169840515050pzd7.pdf
    • http://veruvipavopa.getenjoyment.net/44820548431.pdf
    • http://vizilirudigub.getenjoyment.net/who_is_the_gimp_in_ahs_apocalypse.pdf
    • http://vopagokiniki.mypressonline.com/lokmat_newspaper_nanded.pdf
    • http://blu-ital.space/ball_balance_game_app_iosmm1ip.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://liraperuwuw.atwebpages.com/sears_craftsman_lawn_mower_parts_near_me.pdf
    • http://damusoborubumo.epizy.com/janisuxipererusiguxuru.pdf
    • http://zorijefugixor.atwebpages.com/astable_multivibrator_practical.pdf
    • https://s3.amazonaws.com/tenunud/akai_mpc_2000xl_service_manual.pdf
    • http://muliwavanebebo.onlinewebshop.net/duxaxase.pdf
    • https://s3.amazonaws.com/zuxime/97703644688.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e73e.bin
785969362be27db8c3380fffc7d64038972d01b16633db76370f45ee0b0fcd9f
pdf-font-stream PDF embedded font (sfnt) at offset 0xE73E 4708 bytes
font_01_sfnt_off0000f76c.bin
b56d354b2a1e9ce8bcf1a766f84df61df9fa7c8ea82e740090fe4224b37e837b
pdf-font-stream PDF embedded font (sfnt) at offset 0xF76C 11712 bytes
font_02_sfnt_off00011f69.bin
18c569997d7eaae0972317e3427b4d89104826889c665db90923cb03113ac630
pdf-font-stream PDF embedded font (sfnt) at offset 0x11F69 16180 bytes